On 27/11/17 21:34, Thomas Gleixner wrote: > XEN_PV paravirtualizes read/write_c3. This does not work with KAISER as the > CR3 switch from and to user space PGD would require to map the whole XEN_PV > machinery into both. It's also not clear whether the register space is > sufficient to do so. All other PV guests use the native implementations and > are compatible with KAISER. > > Add detection for XEN_PV and disable KAISER in the early boot process when > the kernel is running as a XEN_PV guest. > > Signed-off-by: Thomas Gleixner <[email protected]>
Reviewed-by: Juergen Gross <[email protected]> Juergen
